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Historically a nation of immigrants, the United States is home to nearly 41 million immigrants, who represent 13 percent of the total population and play a key role in the economic, civic, and cultural life of the country. The research collected here covers many facets of immigration to the United States, by the numbers and how immigrants fare in the country's classrooms and workplaces, the policies and regulations that shape the admission of new immigrants, the enforcement programs and polices in place at U.S. borders and within the interior, and integration policies and efforts taking place in local communities, in states, and at the federal level.

Nearly 2 million of the 4 million-strong Vietnamese diaspora live in the United States, with many having come in the immediate aftermath of the Vietnam War and during the long-running Indochinese refugee crisis. With April 30 marking the 40th anniversary of the fall of Saigon, learn more about the Vietnamese diaspora in the United States and Vietnam's contemporary and historical migration experience.

An estimated 41.3 million immigrants lived in the United States in 2013, about 13 percent of the total U.S. population, constituting the world's largest foreign-born population. This Spotlight from MPI's Jie Zong and Jeanne Batalova offers the most current and sought-after data on immigrants in the United States—including origin, educational attainment, the unauthorized, deportations, and more—in one easy-to-use resource.

MPI has compiled in one easy-to-access location its key research and data resources on issues, policies, enforcement programs, and more that relate to the immigration reform debate underway in Washington.

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Migration to the United States from the Korean peninsula, largely from South Korea, owes its roots to political, military, and economic factors, with an estimated 1.1 million Korean immigrants in the United States. Korean migration to the United States has stalled in recent years, and even declined, with a small but growing number of immigrants and their U.S.-born children returning to Korea, as this article explores.

While immigration and the Latino vote may not have been decisive in the 2014 midterm elections, the Republican takeover of the Senate come January 2015 and increased majority in the House have significant implications for the outcome of the immigration debate. This article examines the changing dynamics and the president's intent to proceed with executive action to shield some of the unauthorized immigrant population from deportation.

From 1980 to 2013, the sub-Saharan African immigrant population in the United States increased from 130,000 to 1.5 million, roughly doubling each decade between 1980 and 2010. This profile provides up-to-date demographic information for sub-Saharan immigrants including location, educational attainment, workforce participation, and much more.

The outbreak of Ebola in West Africa, with three cases diagnosed in the United States, has generated tremendous public fear and anxiety in the United States and other countries. The Obama administration has restricted air travel from West Africa to five airports with enhanced screening, amid calls for a complete travel ban. The Policy Beat examines the use of U.S. immigration controls to halt the spread of disease.

Recent surges in the arrival of unauthorized migrants with possible humanitarian claims have prompted the United States and the European Union to consider in-country and offshore processing for some refugee and asylum applications. As this article explores, some of the questions raised about the feasibility of such programs include their consistency with humanitarian law and their effectiveness in reducing unwanted entries.

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This MPI panel discussion examines the U.S. deportation system with analysis on migrant apprehensions, removals, returns, and criminal prosecutions, and launches the report, "The Deportation Dilemma: Reconciling Tough and Humane Enforcement."

This event with UN High Commissioner for Refugees António Guterres features findings from UNHCR’s report, Children on the Run, which examines the increasing numbers of children from Central America and Mexico who head off alone to find refuge in the United States, fleeing violence, insecurity, and abuse.

This panel discussion on unaccompanied minors focuses on a report by Kids in Need of Defense and the Center for Gender & Refugee Studies at UC Hastings College of the Law, whose primary conclusion is that children face a U.S. immigration system created for adults that is not required to consider the child’s best interests.

This discussion explores how the 2014 Greek Presidency of the European Union and the United States can work to address the challenges of managing migration while meeting humanitarian obligations and nurturing economic growth.

This panel discussion offers perspectives on border policy management from leading officials in the Canadian, Mexican, and U.S. governments, and showcases the MPI book, "Managing Borders in an Increasingly Borderless World."

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This MPI panel discussion focuses on a toolkit by the Women's Refugee Commission to provide detained and deported immigrants as well as unauthorized immigrant mothers and fathers with crucial information to protect and maintain their parental rights and make well-informed decisions regarding the care and welfare of their children.

The authors of the report "Immigrant Parents and Early Childhood Programs: Addressing Barriers of Literacy, Culture, and Systems Knowledge" discuss their findings on this webinar. They and other presenters detail the experiences and challenges faced by early childhood programs and immigrant and refugee parents as they connect with one another.

A discussion of data compiled by MPI on "brain waste" among foreign-trained nurses, engineers, and teachers, with updates on three state-level initiatives—in Illinois, Massachusetts, and Washington State—that are working to analyze and address challenges faced by immigrants and refugees with degrees and training in these fields.

This MPI panel discussion examines the U.S. deportation system with analysis on migrant apprehensions, removals, returns, and criminal prosecutions, and launches the report, "The Deportation Dilemma: Reconciling Tough and Humane Enforcement."

In this webinar, experts discuss barriers immigrant and LEP individuals face in accessing the WIA system, how a revitalized WIA could address these barriers, and the extent to which the current Senate Health, Education, Labor, and Pensions (HELP) Committee's WIA reauthorization proposal addresses these barriers.

With the ten year anniversary of the September 11, 2001 attacks approaching, the Migration Policy Institute held a conference call to discuss the most significant changes that have occurred in the immigration arena in the decade since the attacks.

This interactive language access webinar, one in a series offered by the Migration Policy Institute's National Center on Immigrant Integration Policy, examines how New York and Illinois have broken down some of these barriers to proactively engage LEP communities to obtain workforce services.

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Recent Activity

The Deferred Action for Childhood Arrivals (DACA) program is unprecedented in the scope of its educational requirements. This report provides sociodemographic snapshots of three key DACA groups, explores the challenges to their educational success, and offers recommendations for educators and other stakeholders looking to support the educational attainment of these young unauthorized immigrants.

County- and state-level data examining the populations potentially eligible for the Deferred Action for Childhood Arrivals (DACA) program show an interesting level of ethnic and enrollment diversity that is obscured when examining national-level findings. This commentary examines a few of the findings learned from the new MPI profiles of DACA populations in 36 counties, which are accessible via an online data tool.

Large immigration flows challenge destination cities to find innovative ways to meet the needs of immigrant residents and promote their integration. This report examines the successful integration strategies of five U.S. cities—Cupertino and San Francisco, CA; Littleton, CO; New York City; and Seattle—and offers lessons for local governments looking to implement their own initiatives.

Where does residential segregation come from, and why does it vary significantly across minority groups and country contexts? This report explores these questions and examines the policy tools that lawmakers on both sides of the Atlantic have used to address the segregation of immigrant groups.

Estimates of unauthorized immigrant populations that could receive relief from deportation under potential executive action scenarios to expand the Deferred Action for Childhood Arrivals (DACA) program, extend deferred action to other populations, or refine immigration enforcement priorities are discussed during this webinar.

In the absence of legislative movement to reform the U.S. immigration system, the Obama administration is considering executive action to provide relief from deportation to some of the nation's estimated 11.7 million unauthorized immigrants. This issue brief examines a number of scenarios for possible executive action, estimating how many people could benefit.

Immigration alone cannot save Detroit, which has become a byword for urban decline and economic decay. But if carefully managed in the context of a broader economic development strategy, immigration may be a promising tool for boosting Detroit’s economic prospects, stemming population decline, and replenishing diminished city resources.

In the Spotlight

State Immigration Data Profiles

Want the latest facts and data on immigrants in the United States? Search U.S. Census data on U.S. immigrants and the native born nationally and by state based on demographic, language and education, workforce, and income indicators.

Want the latest estimates and characteristics of unauthorized immigrants in the United States, including those potentially eligible for relief from deportation? Use this innovative data tool to get population estimates and much more—including countries of origin, recency of arrival, educational enrollment and attainment, industries of employment, incomes, English proficiency, and health care coverage—at the national level, by state, and for top counties.